Where the sandy beach of the Salton Sea, the biggest lake in California, begins to crunch harder, it does not even consist of sand any more: Millions of dead fish, plants and insects pile up on the shore to form a highly toxic substance. This is how Derek explains it, a member of a Cahuilla tribe that managed to escape an attempted genocide in the 19th century to the Salton Sea and now sees itself as a protective force for the once flourishing but increasingly deserted area and its outcasts.